High pressure water valve
US4660891A · kind A · utility
10Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Jul 2, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C25/60
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A high pressure water valve (18) supplies water under very high pressure to nozzles (14) for cutting rock or concrete by water jets emitted from the nozzles. A valve plug (30,48) rotates in bearing rings (27) and cooperates with a valve bushing (22;45) of wear resistant high strength material to control the water supply to the nozzles via one or more valve openings (28;51) in said bushing or plug. High pressure water in a pressure opening (33;47) in respectively the plug or bushing forces the plug to sealingly occlude one or more valve openings (28;51) disposed diametrically opposite to said pressure opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.